Abstract: A system for monitoring a plurality of individuals engaged in a sporting activity includes a base station; a plurality of individual participant monitors, affixed to each individual and wirelessly communicating with said base station; a plurality of sensors in each said monitor or on each individual, in communication with each monitor and configured to sense a physiological or activity parameter of the individual; each monitor transmitting data relating to parameters sensed by said sensors to the base station; one or more group monitoring devices communicating wirelessly with said base station to receive said sensed parameter data. The system displays, during said activity, data relating to one or more sports parameters of one or more individuals as well as displaying the operational status of one or more of each monitor, each sensor, and the base station.

Abstract: A system for tracking balls in sports in which players kick, pass, bounce, strike or carry a ball. The ball is equipped with two beacons pulsing in the 5-10 Hz range at a frequency which is not attenuated by the body of the players. one beacon has a very short range of 40-120 cm and the other has a range of 1-5 meters. A data logger worn by the players includes a clock, location and speed sensors, a receiver for the beacon signals and a micro controller to record the data from all the sensors. The micro controller is able to record whether the player is in possession of the ball or is contesting the ball. The path of the ball from player to player is tracked relative to the playing field. An impact or pressure sensor may be fitted to the players footwear, glove or a bat stick, club or racquet to register a kick or ball strike.

Abstract: A system for tracking balls in sports in which players kick, pass, bounce, strike or carry a ball. The ball is equipped with two beacons pulsing in the 5-10 Hz range at a frequency which is not attenuated by the body of the players. one beacon has a very short range of 40-120 cm and the other has a range of 1-5 metres. A data logger worn by the players includes a clock, location and speed sensors, a receiver for the beacon signals and a micro controller to record the data from all the sensors. The micro controller is able to record whether the player is in possession of the ball or is contesting the ball. The path of the ball from player to player is tracked relative to the playing field.